Stapler



FIG 1 is a top, front, right side perspective view of the stapler;

FIG. 2 is a top, rear, right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof, the right side elevational view is a mirror image thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figure drawings represent unclaimed portions of the stapler and form no part of the claimed design. 

The ornamental design for a stapler, as shown and described. 